On Tue, 7 Dec 2004, cheng shan wrote:
>In the first version, the function destroy_object_type( ) just drop the
>table only. But when I find the triggers havn't
>been actived yet, I add the delete setense. This time it becomes even
>worse, the system throws error message.ERROR: could
>not open r
On Tue, Dec 07, 2004 at 02:41:37PM +0800, cheng shan wrote:
> In the first version, the function destroy_object_type( ) just drop
> the table only. But when I find the triggers havn't been actived
> yet, I add the delete setense. This time it becomes even worse,
> the system throws error message.
Note: forwarded message attached.
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The reason I drop the table directly is that:
I am developing a graphical information system. There are many tables inherit from object in the system, such as "map", "line", "rect", "circle", etc. In most tim
On Tue, Dec 07, 2004 at 11:44:58AM +0800, cheng shan wrote:
> I have one table named "object" and i many tables that are related
> to the table "object". When a record in "object" is deleted, the
> relative records in other tables should also be erased. To implement
> the above goal, i define ma
I have one table named "object" and i many tables that are related to the table "object". When a record in "object" is deleted, the relative records in other tables should also be erased. To implement the above goal, i define many triggers on table "object" to make operations automatically.
But
